Them paying more would either relieve the burden on other parts of society, slow down the debt accumulation (even just a little bit), or allow the government to spend more on public services. All of these three have an impact on your life. If you think it would have no effect at all then you have an odd way of doing math.
>> Are you seriously saying that the reason Google has no competition in France is because they pay less taxes?
Maybe, who knows? But what we have at the moment is market distortion and monetary advantages for multinationals that can play these games. Certainly the likes of Starbucks (who pay little to no UK tax) have a direct financial advantage against smaller operators and local chains.
>> As long as there is no low flat-tax but unfair and complicated tax system.
This is a pipe dream, and any flat tax I've ever seen proposed is highly regressive, loading the burden onto the middle classes (and away from the very wealthy). What I find most amusing about it is how the very wealthy have so many cheerleaders who are in effect arguing for higher taxes for themselves.
>> People will always try to avoid it.
Yes, but you seem to be supporting your own country getting screwed by large corporations and transferring that burden to yourself, French companies and French citizens.
>> Get rid of your insane tax system and you'll get rid of these special exemptions. Just like getting rid of alcohol prohibition got rid of the bootlegging problems.
It's not quite that simple unfortunately.